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Umbilical flowmetry in twin pregnancy. A method for identifying discordant feta...
Clode, N; Serviço de Obstetricia e Ginecologia, Hospital de Santa Maria, Faculdade de Medicina de Lisboa.; Casal, E; Graça, L MUmbilical artery velocimetry was performed in 33 twin gestations to evaluate the predictivity of the test (umbilical artery S/D difference between the pair > 0.4) in the screening of discordant fetal growth. Four out of 10 cases of discordant fetal growth were identified by the test and it was abnormal in 1 out of 23 concordant twins. The sensitivity was 40%, specificity 95%, positive predictive value 80% and n...
Relationship between the Steuart resistance index of the umbilical artery in no...
Clode, N; Serviço de Obstetrícia e Ginecologia, Hospital de Santa Maria, Faculdade de Medicina de Lisboa.; Marques, J P; Casal, E; Graça, LUmbilical artery Doppler velocimetry was performed at 28-32 and 36-38 weeks of gestation in a low risk population to correlate the Stuart's resistance index (Sistole/Diastole--S/D) to the weight and ponderal index of the newborn, and to determine the preditive value of S/D ratio greater than the 95 centil in the screening of newborns of weight or ponderal index lower than the 10 centil. Two hundred and eight tw...
Doppler flowmetry of feto-maternal circulation: III --Absent and reverse diasto...
Graça, L M; Unidade de Alto Risco Obstétrico, Hospital de Santa Maria/Faculdade de Medicina, Lisboa.; Clode, N; Cardoso, C G; Colaço, A; Casal, ETwelve cases of extreme umbilical blood flow impairement (8 cases with loss of end-diastolic blood flow and 4 cases with reversed flow) found among 658 pregnancies studied by continuous Doppler between April 1st 1989 and March 31st 1990, are reported. The findings were associated to intra-uterine growth retardation (92%), maternal hypertensive disease (50%) and perinatal death (33%); fetal Trisomy 21 was the so...
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